Q2S and Security for Wireless and Mobile Networks最新文献_第10页

Throughput and QoS optimization in nonuniform multichannel wireless mesh networks 非均匀多通道无线网状网络的吞吐量和QoS优化

Q2S and Security for Wireless and Mobile Networks Pub Date : 2008-10-27 DOI: 10.1145/1454586.1454589

T. Szymanski

{"title":"Throughput and QoS optimization in nonuniform multichannel wireless mesh networks","authors":"T. Szymanski","doi":"10.1145/1454586.1454589","DOIUrl":"https://doi.org/10.1145/1454586.1454589","url":null,"abstract":"A technology to increase throughput and QoS in infrastructure-based Wireless Mesh Networks (WMNs) is proposed. In a uniform WMN, let each Base Station (BS) have R1 transceivers for communications with neighboring BSs, and R2 transceivers for communications with the Stationary and Mobile Subscribers within the wireless cell. One Gateway BS provides access to the global Internet, and the throughput capacity of the entire WMN is constrained by the IO bandwidth of the Gateway. A small number of extra wireless links can be added to the Gateway BS and selected other BSs, resulting in a nonuniform system. The addition of an asymptotically small number of transceivers can increase WMN capacity several fold. Efficient scheduling requires the partitioning of an asymmetric bipartite graph representing a general traffic rate matrix, into multiple graphs representing doubly-stochastic matrices. Routing and scheduling algorithms presented. The algorithms can provision long-term multimedia flows including VOIP or IPTV with guaranteed service. For multichannel WMNs where the traffic is routed and partitioned, the number of queued cells per BS is near-minimal and bounded, the end-to-end delay and jitter are near-minimal and bounded, and cell loss rates due to scheduling conflicts are zero. The algorithm also achieves 100% of capacity.","PeriodicalId":369459,"journal":{"name":"Q2S and Security for Wireless and Mobile Networks","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114496188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Performance evaluation of real-time schedulers for HCCA function in IEEE 802.11e wireless networks IEEE 802.11e无线网络中HCCA功能实时调度器的性能评估

Q2S and Security for Wireless and Mobile Networks Pub Date : 2008-10-27 DOI: 10.1145/1454586.1454588

G. Cecchetti, A. L. Ruscelli

{"title":"Performance evaluation of real-time schedulers for HCCA function in IEEE 802.11e wireless networks","authors":"G. Cecchetti, A. L. Ruscelli","doi":"10.1145/1454586.1454588","DOIUrl":"https://doi.org/10.1145/1454586.1454588","url":null,"abstract":"IEEE 802.11 standard for wireless networks recently has been enhanced with IEEE 802.11e amendment to this protocol which introduces Quality of Service support. It provides differentiation mechanisms at the Medium Access Control layer, using two additional access functions: the Enhanced Distributed Channel Access (EDCA) function and the HCF Controlled Channel Access (HCCA) function.\u0000 The EDCA function is based on a distributed control and enables prioritized channel access while the latter requires centralized scheduling and allows the applications to negotiate parameterized service guarantees. Only HCCA mechanism is suitable for serving traffic streams with real-time requirements such as multimedia applications and Voice Over IP. The IEEE 802.11e standard does not specify a mandatory HCCA scheduling algorithm, while it offers a reference scheduler.\u0000 In this paper we analyze four HCCA schedulers which are alternative to the reference one and which offer real-time guarantees. A performance evaluation through simulation is conducted to show the main differences between the considered schedulers, including the reference one.","PeriodicalId":369459,"journal":{"name":"Q2S and Security for Wireless and Mobile Networks","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124392564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Adaptive traffic filtering for efficient and secure IP-mobility 自适应流量过滤，实现高效、安全的ip移动

Q2S and Security for Wireless and Mobile Networks Pub Date : 2008-10-27 DOI: 10.1145/1454586.1454594

Mirco Marchetti, M. Colajanni

{"title":"Adaptive traffic filtering for efficient and secure IP-mobility","authors":"Mirco Marchetti, M. Colajanni","doi":"10.1145/1454586.1454594","DOIUrl":"https://doi.org/10.1145/1454586.1454594","url":null,"abstract":"The Mobile IP (MIP) protocol that supports node mobility in IP networks may be implemented through two routing schemes: triangular routing and reverse tunneling. While triangular routing guarantees better performance because of shorter routing paths, it is not compatible with egress filtering policies enforced by many firewalls. As a result, it is necessary to recur to the slower reverse tunneling routing scheme that causes lower mobile connection throughput and higher round trip times. In this paper, we propose an innovative adaptive traffic filtering technique in which egress filtering rules are dynamically and automatically modified to reflect the presence of mobile nodes inside the protected network. The proposed scheme, called secure triangular routing, guarantees the best trade-off between performance and security because it enables triangular routing without violating network security policies. Viability and performance improvements of the proposed solution have been demonstrated by experiments carried out through a prototype. The proposed solution does not require any modification in correspondent nodes or in their networks, and it fully complies with the MIP protocol specifications.","PeriodicalId":369459,"journal":{"name":"Q2S and Security for Wireless and Mobile Networks","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132158809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fast, secure handovers in 802.11: back to the basis 在802.11中快速、安全的移交:回到基础

Q2S and Security for Wireless and Mobile Networks Pub Date : 2008-10-27 DOI: 10.1145/1454586.1454592

R. Marques, A. Zúquete

引用次数: 7

TSR: trust-based secure MANET routing using HMMs TSR:使用hmm的基于信任的安全MANET路由

Q2S and Security for Wireless and Mobile Networks Pub Date : 2008-10-27 DOI: 10.1145/1454586.1454602

M. Moe, B. Helvik, S. J. Knapskog

引用次数: 45

Secure authentication and management scheme for RFID RFID安全认证与管理方案

Q2S and Security for Wireless and Mobile Networks Pub Date : 2008-10-27 DOI: 10.1145/1454586.1454605

Dae-Hee Seo, Jang-Mi Baek, Dong-Sub Cho

引用次数: 0

A distributed resource management scheme for load-balanced QoS provisioning in heterogeneous mobile wireless networks 一种异构移动无线网络中负载均衡QoS提供的分布式资源管理方案

Q2S and Security for Wireless and Mobile Networks Pub Date : 2008-10-27 DOI: 10.1145/1454586.1454598

S. Ahmad, M. Qadir, M. Akbar

引用次数: 7

In-network optimal rate reduction for packetized MPEG video 分组MPEG视频的网络最优速率降低

Q2S and Security for Wireless and Mobile Networks Pub Date : 2008-10-27 DOI: 10.1145/1454586.1454597

G. Ravindra, Joseph Thaliath, I. Chakeres

{"title":"In-network optimal rate reduction for packetized MPEG video","authors":"G. Ravindra, Joseph Thaliath, I. Chakeres","doi":"10.1145/1454586.1454597","DOIUrl":"https://doi.org/10.1145/1454586.1454597","url":null,"abstract":"Bottleneck links in network elements cause packet queues to overflow thereby resulting in random packet loss. This problem is a big issue at the boundary of wired and wireless networks, and it can cause streamed media applications to perform poorly. For streamed MPEG video, packet loss can induce an incorrect MPEG video bit-stream syntax. At the video player the corrupt stream leads to an improper decoding of frames resulting in a poor viewer experience that can include frame corruption, frame freezing and tiling artifacts. Even very few packet losses can result in a noticeable decay in perceived video quality. To solve this problem, we propose a deterministic in-network selective packet forwarding algorithm that preserves MPEG video syntax while reducing the bandwidth of the video stream to be below the bottleneck bandwidth. Optimality of the forwarding algorithm is achieved by solving a 0-1 knapsack problem using estimated video parameters. We evaluate the proposed scheme for real MPEG-2 and MPEG-4 video streams. The performance of the proposed algorithm is evaluated in terms of the reduction in the number of bit stream syntax errors in addition to the rate optimality.","PeriodicalId":369459,"journal":{"name":"Q2S and Security for Wireless and Mobile Networks","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121583795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Trust transferability among similar contexts 相似背景下的信任可转移性

Q2S and Security for Wireless and Mobile Networks Pub Date : 2008-10-27 DOI: 10.1145/1454586.1454603

Mozhgan Tavakolifard, S. J. Knapskog, P. Herrmann

引用次数: 40

A priority based QoS-Aware MAC protocol (PQAMP) in mobile ad hoc networks 移动自组网中基于优先级的qos感知MAC协议(PQAMP)

Q2S and Security for Wireless and Mobile Networks Pub Date : 2008-10-27 DOI: 10.1145/1454586.1454600

N. Sarma, Sukumar Nandi

引用次数: 6